JP2001510245A - Cellulose acetate filament with trilobal cross section - Google Patents
Cellulose acetate filament with trilobal cross sectionInfo
- Publication number
- JP2001510245A JP2001510245A JP2000503272A JP2000503272A JP2001510245A JP 2001510245 A JP2001510245 A JP 2001510245A JP 2000503272 A JP2000503272 A JP 2000503272A JP 2000503272 A JP2000503272 A JP 2000503272A JP 2001510245 A JP2001510245 A JP 2001510245A
- Authority
- JP
- Japan
- Prior art keywords
- filament
- cellulose acetate
- form factor
- cross
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002301 cellulose acetate Polymers 0.000 title claims abstract description 26
- 238000006467 substitution reaction Methods 0.000 claims abstract description 10
- 241000208125 Nicotiana Species 0.000 abstract description 7
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 description 16
- 239000000835 fiber Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004438 BET method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000578 dry spinning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007430 reference method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
- D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
- D01F2/30—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate by the dry spinning process
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/2964—Artificial fiber or filament
- Y10T428/2965—Cellulosic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2973—Particular cross section
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
(57)【要約】 本発明は、トライローバル断面形状でおよそ２．１から３．０の置換度を有するセルロースアセテートフィラメントに関する。これらは、３．３dtexより低いフィラメントタイターと、０．３２０より低いPE形状因子と、そして０．５６０より低いPH形状因子とを有する。これらのセルロースアセテートフィラメントは特に、たばこフィルターに用いられたとき優れた吸収量を示す。 (57) [Summary] The present invention relates to cellulose acetate filaments having a degree of substitution of approximately 2.1 to 3.0 in trilobal cross-sectional shape. These have a filament titer lower than 3.3 dtex, a PE form factor lower than 0.320, and a PH form factor lower than 0.560. These cellulose acetate filaments exhibit excellent absorption, especially when used in tobacco filters.
Description
【０００１】 本発明は、トライローバル断面形状を有し、およそ２．１から３．０の置換度
を有するセルロースアセテートフィラメントに関する。The present invention relates to a cellulose acetate filament having a trilobal cross-sectional shape and having a degree of substitution of approximately 2.1 to 3.0.
【０００２】 フィルタートウの製造に用いられるセルロースアセテートフィラメントは、た
ばこの煙中の汚染物質への作用表面積を大きくするために、できる限り高い比表
面積、すなわちフィルタートウの単位重量あたりできる限り高い比表面積を有す
るべきである。こうすることによって、高濾過能力が得られるとともに、原材料
の経済的使用が可能となる。比表面積を決定する重要なパラメーターは、単位長
さあたりのフィラメントの質量を表すフィラメントタイターと、フィラメント断
面の周長の二乗に対するフィラメントの断面積の比率尺度を表す形状因子PEと、
そして凸包の面積に対するフィラメントの断面積の比率尺度を表す形状因子KHで
ある。比表面積を高くするには、これらのパラメーターをできる限り低く維持し
なければならない。[0002] Cellulose acetate filaments used in the production of filter tow have a specific surface area which is as high as possible, that is, as high as possible per unit weight of filter tow, in order to increase the active surface area of pollutants in tobacco smoke. Should have. In this way, a high filtration capacity is obtained, and economical use of raw materials becomes possible. Important parameters for determining the specific surface area are a filament titer representing the mass of the filament per unit length, a shape factor PE representing a ratio of the cross-sectional area of the filament to the square of the perimeter of the filament cross-section,
Then, it is a shape factor KH representing a scale of a ratio of a sectional area of the filament to an area of the convex hull. In order to increase the specific surface area, these parameters must be kept as low as possible.
【０００３】 トライローバル断面は、低い形状因子を達成するのに有利な、ひいては高い比
表面積を達成するのに有利な断面形状である。トライローバル断面形状のフィラ
メントとしては、最新技術で、三角形の断面形状を有するオリフィスから紡糸さ
れるものが知られている。このような製造プロセスが、例えばドイツ特許 43 02 055号に開示されている。この引例プロセスにおいて、トライローバルの、つま
り３本の腕を有する星形構造のセルロースアセテートフィラメントが、押しだし
後に、溶剤、一般的にはアセトンを蒸発させることによって形成される。最新技
術におけるこれらオリフィスで達成可能な形状因子の値としては、PE形状因子が
およそ０．３６０から０．４００、KH形状因子がおよそ０．５８０から０．６２
０である。[0003] A trilobal cross-section is a cross-sectional shape that is advantageous for achieving a low form factor and thus for achieving a high specific surface area. As filaments having a trilobal cross-section, those spun from orifices having a triangular cross-section are known in the state of the art. Such a production process is disclosed, for example, in DE 43 02 055. In this reference process, trilobal, i.e., three-arm, star-structured cellulose acetate filaments are formed by evaporating a solvent, typically acetone, after extrusion. Form factor values achievable with these orifices in the state of the art include PE form factors of about 0.360 to 0.400 and KH form factors of about 0.580 to 0.62.
0.
【０００４】 あるいは、円形断面の極めて細いフィラメントを束にすることによって所望の
大きな表面積を達成することも可能である。これらの細いフィラメントは、小さ
な丸孔オリフィスから紡糸されるようになっている。このような方法が米国特許
5,269,996号に開示されている。しかし、３６μmより小さい直径というこれら大
変細い丸孔のオリフィスからの押しだしプロセスは、極めて困難である。したが
って、この引例方法を技術的に実現する過程でいくつかの問題が生じると考えら
れる。[0004] Alternatively, it is possible to achieve the desired large surface area by bundling very thin filaments of circular cross section. These fine filaments are adapted to be spun from small round hole orifices. Such a method is a US patent
No. 5,269,996. However, the process of extruding these very small round holes with a diameter of less than 36 μm from the orifice is extremely difficult. Therefore, it is considered that some problems arise in the process of technically realizing the reference method.
【０００５】 さらに、たばこ産業用セルロースアセテート繊維を製造する方法が、米国特許
5,512,230号に開示されている。この引例特許に開示された方法は、紡糸液に５ ％から４０％の水を添加して、置換度１．０から２．２のセルロースアセテート
繊維を押しだせるようにしたものである。Further, a method for producing cellulose acetate fibers for the tobacco industry is disclosed in US Pat.
No. 5,512,230. In the method disclosed in this reference, 5% to 40% of water is added to the spinning solution so that cellulose acetate fibers having a substitution degree of 1.0 to 2.2 can be extruded.
【０００６】 こうして、所望の特性という観点から、上記のようにして得られたフィラメン
トタイターに対して、フィルターの、特にたばこフィルターのフィルター材にお
いて、とりわけ煙組成物の濾過に関して、改良されるべき点のあることがわかっ
た。このような改良を化学的手段で達成する提案がいくつか知られている。しか
し物性的修正を加えることによって上記したように最新技術をさらに発展させる
ような明確なアドバイスは、文献等にみあたらない。[0006] Thus, in view of the desired properties, the filament titers obtained as described above have to be improved with respect to the filter, in particular the filter material of the tobacco filter, in particular with respect to the filtration of the smoke composition. I found that there was. Several proposals for achieving such improvements by chemical means are known. However, there is no clear advice in the literature or the like that further develops the latest technology as described above by adding physical properties.
【０００７】 さらに、欧州特許 0 711 512号では、平均径が小さく比表面積の高いフィブリ
ル化状セルロースエステル繊維について開示している。しかしこの刊行物には、
これらの繊維でトライローバル断面形状のものについては言及されていない。む
しろ実際の繊維の形態としては、不定形のもの、すなわちかなり枝分かれしたも
のとなっている。このようなフィブリル化されたファイバー、すなわちスプリッ
トファイバーを製造するには、セルロースエステル液をオリフィスから押しだし
て、この押しだし物に剪断力を作用させながら、セルロースエステル用の沈殿剤
に導入させる。このようにしてフィブリル化された繊維だけが高い比表面積を有
する。そして繊維の断面形状は、この比表面積に対してほとんど重要ではない。
またこの刊行物では、セルロースエステルの繊維長さは一般的におよそ０．１か
ら１０mmで、およそ０．２から５mmが好ましいとされている。つまりエンドレス
フィラメントは製造されていない。なおこれらのフィブリル化された繊維の比表
面積を測定する方法として、固体表面はある量の気体分子を吸収するという原理
に基づいたBET法が用いられている。フィブリル化の枝分かれをもっとも細かく して形成された表面積の増加分はこの方法で正確に測定できる。Further, EP 0 711 512 discloses fibrillated cellulose ester fibers having a small average diameter and a high specific surface area. However, in this publication,
No mention is made of trilobal cross-sections of these fibers. Rather, the actual fiber form is irregular, that is, considerably branched. In order to produce such a fibrillated fiber, that is, a split fiber, a cellulose ester liquid is extruded from an orifice, and the extrudate is introduced into a precipitant for cellulose ester while applying a shearing force. Only fibers fibrillated in this way have a high specific surface area. And the cross-sectional shape of the fiber is of little importance for this specific surface area.
The publication also states that the fiber length of the cellulose ester is generally about 0.1 to 10 mm, preferably about 0.2 to 5 mm. That is, an endless filament is not manufactured. As a method for measuring the specific surface area of these fibrillated fibers, a BET method based on the principle that a solid surface absorbs a certain amount of gas molecules is used. The increase in surface area formed by the finest branches of fibrillation can be accurately measured by this method.
【０００８】 したがって本発明の目的は、たばこフィルターにおける煙の組成物を吸収する
際の効率に関して、上記した最新技術を改良した、トライローバル断面を有する
セルロースアセテートフィラメントを提案することである。このような繊維は従
来の技法で簡単に製造できる。It is therefore an object of the present invention to propose a cellulose acetate filament having a trilobal cross-section, which improves on the state of the art described above with respect to the efficiency in absorbing smoke compositions in tobacco filters. Such fibers can be easily manufactured by conventional techniques.
【０００９】 本発明によれば、上記の目的は、およそ２．１から３．０の置換度でトライロ
ーバル断面形状で、さらに３．３dtexより低いフィラメントタイターと、０．３
２０より低いPE形状因子と、そして０．５６０より低いKH形状因子とを有するセ
ルロースアセテートフィラメントによって達成できる。[0009] According to the present invention, the object is to provide a filament titer having a trilobal cross-sectional shape with a degree of substitution of approximately 2.1 to 3.0, and even less than 3.3 dtex,
This can be achieved with cellulose acetate filaments having a PE form factor of less than 20 and a KH form factor of less than 0.560.
【００１０】 これらの繊維がたばこフィルターに使用されるときに、タイターが３．３dtex
より低い値であることと共に形状因子が有利なものであることによって、特別な
利点、つまり吸収および吸着挙動の改良がもたらされる。言い換えるとこれは、
フィラメントの質量は一定に保たれていながら表面積をより大きくできるという
ことである。欧州特許 0 711 512号に開示されたセルロースエステル繊維とは異
なり、比表面積の増加は、セルロースアセテートフィラメントの断面形状を適正
化することによって可能となった。本発明のフィラメントは、フィブリル化され
ていない、すなわち糸状に引き裂かれていない。なおタイターに対する下方境界
値を正確に述べることはできない。しかし製造業者の実務上の観点からは、タイ
ターが０．７dtexより低くなると製造が困難になってくると推定できる。これに
関して、この最小のタイターは丸孔オリフィスでも得られるということとの違い
に留意すべきである。つまり、本発明の範囲内で、トライローバル断面形状のフ
ィラメントに対しても同じようにタイターを最小にすることが要求されているわ
けではない。タイターはおよそ０．７から２．７dtex、特に１．０から２．５dt
exの範囲が、とりわけ有利と考えられる。[0010] When these fibers are used in tobacco filters, the titer is 3.3 dtex.
The advantage of the form factor, together with the lower values, offers particular advantages, namely improved absorption and adsorption behavior. In other words, this is
This means that the surface area can be increased while keeping the mass of the filament constant. Unlike the cellulose ester fibers disclosed in EP 0 711 512, an increase in specific surface area has been made possible by optimizing the cross-sectional shape of the cellulose acetate filaments. The filaments of the present invention are not fibrillated, ie, not torn in a thread. The lower bound for titers cannot be accurately stated. However, from the practical point of view of the manufacturer, it can be estimated that the production becomes difficult when the titer is lower than 0.7 dtex. In this regard, it should be noted that this minimum titer differs from that obtained with a round hole orifice. That is, within the scope of the present invention, it is not required that a filament having a trilobal cross-sectional shape be minimized in the same manner. Titers are about 0.7 to 2.7 dtex, especially 1.0 to 2.5 dt
The range of ex is considered particularly advantageous.
【００１１】 本発明の範囲内で、PE形状因子は０．３２０より低い。製造の際の実務的な考
慮を行えば、およそ０．１８という最小値が下方値と仮定でき、さらに０．２か
ら０．３の範囲が好適である。[0011] Within the scope of the present invention, the PE form factor is lower than 0.320. With practical considerations during manufacture, a minimum value of about 0.18 can be assumed to be the lower value, with a range of 0.2 to 0.3 being preferred.
【００１２】 好適な境界条件についてKH形状因子にも、PE形状因子に対するのと同様の考慮
を行う。およそ０．３５が好適な下方値で、０．４から０．５２の範囲が特に好
適であると言える。For the preferred boundary conditions, the KH form factor is subject to the same considerations as for the PE form factor. Approximately 0.35 is a preferred lower value, with a range of 0.4 to 0.52 being particularly preferred.
【００１３】 上述のフィラメントは、トライローバル断面形状のオリフィスからの押しだし
によって得られる。本発明におけるオリフィスの断面積はおよそ０．００２mm2 であり、オリフィス細管断面のPE形状因子はおよそ０．３７である。かくして、
セルロースアセテートフィラメントのトライローバル断面形状は、このオリフィ
スの断面によってすでに特定化されている。結局、最新技術における形状因子よ
りも大幅に有利な形状因子を有するフィラメントを得ることができた。The above-described filament is obtained by extrusion from an orifice having a trilobal cross-sectional shape. The cross-sectional area of the orifice in the present invention is about 0.002 mm 2 , and the PE form factor of the cross section of the orifice capillary is about 0.37. Thus,
The trilobal cross-sectional shape of the cellulose acetate filament has already been specified by the cross-section of this orifice. Eventually, it was possible to obtain a filament having a form factor that was significantly more advantageous than the state of the art.
【００１４】 フィラメントの質量に対する表面積の率は、本発明での形状因子における減少
によって大幅に改良できた。たとえばタイターが３dtexでPE形状因子が０．３８
０のフィラメントの比表面積は、０．２９０m2／gである。PE形状因子を０．３ ００まで下げることによって、同じ細さでありながら比表面積が０．３２７m2／
gのフィラメントが得られる。これは、同じ質量のフィラメントで表面積が１３ ％増加したことに相当する。比表面積について上記した値は幾何計算のみによっ
て算定したものであるため、BET法での測定によって得られた値より低くなって いることに留意すべきである。したがって、本発明のフィラメントにより、原材
料の経済的な使用を実現化し、コストの低減化をはかることができたということ
になる。The ratio of the surface area to the mass of the filament could be greatly improved by a reduction in the form factor according to the invention. For example, a titer of 3 dtex and a PE form factor of 0.38
The specific surface area of the 0 filament is 0.290 m 2 / g. By reducing the PE form factor to 0.300, the specific surface area is 0.327 m 2 /
g of filament is obtained. This corresponds to a 13% increase in surface area with the same mass of filament. It should be noted that the above values for the specific surface area are calculated only by geometric calculations, and are therefore lower than the values obtained by measurement by the BET method. Therefore, the use of the filament of the present invention makes it possible to realize economical use of raw materials and reduce costs.
【００１５】 この押しだしプロセスは、乾式紡糸による従来の方法で可能である。したがっ
て、本発明のセルロースアセテートフィラメントは、煙の吸収能力においても製
造方法の簡易さにおいても、目立ってすぐれているということである。セルロー
スアセテートの置換度DSがおよそ２．１から３．０、特にはおよそ２．３から２
．９、さらに特には２．３から２．７であるために、およそ３％の水を含有する
従来の紡糸液での反応が可能である。なおおよそ２．５の置換度が特に好ましい
ものとみなされている。This extrusion process is possible in a conventional manner by dry spinning. Therefore, the cellulose acetate filament of the present invention is remarkably excellent both in the capacity to absorb smoke and the simplicity of the production method. The degree of substitution DS of cellulose acetate is about 2.1 to 3.0, especially about 2.3 to 2
. 9, and more particularly 2.3 to 2.7, allows reaction with conventional spinning solutions containing approximately 3% water. A degree of substitution of approximately 2.5 is considered to be particularly preferred.
【００１６】 以下、本発明を実施例によって説明する。それぞれの場合で、アセトン溶剤に
とかしたセルロースアセテート紡糸液が、これらの実施例に用いられた。Hereinafter, the present invention will be described with reference to examples. In each case, a cellulose acetate spinning solution dissolved in an acetone solvent was used in these examples.
【００１７】 実施例１： 紡糸液： セルロースアセテートの置換度（DS）： ２．４８ セルロースアセテートの濃度： ２７．８％ 水の濃度： ３．５％ 紡糸液の粘度： ６８Paxs 紡糸条件： 紡糸ヘッドの温度： ５６℃ 紡糸セルの温度： ６５℃ １２５孔のトライローバル押出しダイ 紡糸速度： ３００m／mm 延伸係数（Drawing factor）： １．６ Example 1: Spinning solution: degree of substitution (DS) of cellulose acetate: 2.48 Concentration of cellulose acetate: 27.8% Water concentration: 3.5% Viscosity of spinning solution: 68 Paxs Spinning conditions: spinning head Temperature: 56 ° C. Spinning cell temperature: 65 ° C. 125-hole trilobal extrusion die Spinning speed: 300 m / mm Drawing factor: 1.6
【００１８】 これらパラメーターのもとで行われたこの紡糸方法により、フィラメントあた
り３．０dtexのタイターと、０．２９０のPE形状因子と、そして０．５０５のKH
形状因子のフィラメントが得られ、これによって表面積が有利に大きくなった。
そしてさらに、このフィラメントは、たばこの煙組成物に対するより優れた濾過
特性を示した。With this spinning method performed under these parameters, a titer of 3.0 dtex per filament, a PE form factor of 0.290 and a KH of 0.505
Form factor filaments were obtained, which advantageously increased the surface area.
And furthermore, the filaments exhibited better filtration properties for tobacco smoke compositions.
【００１９】 実施例２： 紡糸液： セルロースアセテートの置換度： ２．４５ セルロースアセテートの濃度： ２８．５％ 水の濃度： ２．７％ 紡糸液の粘度： ７１Paxs 紡糸条件： 紡糸ヘッドの温度： ５６℃ 紡糸セルの温度： ６５℃ トライローバル押出しダイ オリフィスの断面積： ０．００１１８mm2 紡糸速度： ４００m／mm 延伸係数（Drawing factor）： ２．１ Example 2: Spinning solution: degree of substitution of cellulose acetate: 2.45 Concentration of cellulose acetate: 28.5% Water concentration: 2.7% Viscosity of spinning solution: 71 Paxs Spinning conditions: temperature of spinning head: 56 ° C. Spinning cell temperature: 65 ° C. Tri-lobal extrusion die Orifice cross-sectional area: 0.00118 mm 2 Spinning speed: 400 m / mm Drawing factor: 2.1
【００２０】 これらパラメーターのもとで、２．１dtexの細さ程度と、０．３０３のPE形状
因子と、そして０．５１７のKH形状因子のセルロースアセテートフィラメントが
得られた。この利点は、実施例１の利点と同様であった。Under these parameters, a cellulose acetate filament with a fineness of 2.1 dtex, a PE form factor of 0.303, and a KH form factor of 0.517 was obtained. This advantage was similar to that of the first embodiment.
───────────────────────────────────────────────────── フロントページの続き (81)指定国 ＥＰ(ＡＴ，ＢＥ，ＣＨ，ＣＹ， ＤＥ，ＤＫ，ＥＳ，ＦＩ，ＦＲ，ＧＢ，ＧＲ，ＩＥ，Ｉ Ｔ，ＬＵ，ＭＣ，ＮＬ，ＰＴ，ＳＥ)，ＯＡ(ＢＦ，ＢＪ ，ＣＦ，ＣＧ，ＣＩ，ＣＭ，ＧＡ，ＧＮ，ＧＷ，ＭＬ， ＭＲ，ＮＥ，ＳＮ，ＴＤ，ＴＧ)，ＡＰ(ＧＨ，ＧＭ，Ｋ Ｅ，ＬＳ，ＭＷ，ＳＤ，ＳＺ，ＵＧ，ＺＷ)，ＥＡ(ＡＭ ，ＡＺ，ＢＹ，ＫＧ，ＫＺ，ＭＤ，ＲＵ，ＴＪ，ＴＭ) ，ＡＬ，ＡＭ，ＡＴ，ＡＵ，ＡＺ，ＢＡ，ＢＢ，ＢＧ， ＢＲ，ＢＹ，ＣＡ，ＣＨ，ＣＮ，ＣＵ，ＣＺ，ＤＥ，Ｄ Ｋ，ＥＥ，ＥＳ，ＦＩ，ＧＢ，ＧＥ，ＧＨ，ＧＭ，ＨＲ ，ＨＵ，ＩＤ，ＩＬ，ＩＳ，ＪＰ，ＫＥ，ＫＧ，ＫＰ， ＫＲ，ＫＺ，ＬＣ，ＬＫ，ＬＲ，ＬＳ，ＬＴ，ＬＵ，Ｌ Ｖ，ＭＤ，ＭＧ，ＭＫ，ＭＮ，ＭＷ，ＭＸ，ＮＯ，ＮＺ ，ＰＬ，ＰＴ，ＲＯ，ＲＵ，ＳＤ，ＳＥ，ＳＧ，ＳＩ， ＳＫ，ＳＬ，ＴＪ，ＴＭ，ＴＲ，ＴＴ，ＵＡ，ＵＧ，Ｕ Ｓ，ＵＺ，ＶＮ，ＹＵ，ＺＷ──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP , KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
Claims (5)
度を有するセルロースアセテートフィラメントであって、 前記フィラメントは、３．３dtexより低いタイターと、０．３２０より低いPE
形状因子と、０．５６０より低いKH形状因子とを有し、これら形状因子は以下の
比率によって決定されることを特徴とするセルロースアセテートフィラメント。
PE＝４πA／P2 および KH＝A／Ak ここに、Aはフィラメントの断面積、Pはフィラメント断面の周長、そしてAkは
フィラメント断面の凸包の面積である。1. A cellulose acetate filament having a trilobal cross-section and having a degree of substitution of substantially from 2.1 to 3.0, wherein said filament has a titer lower than 3.3 dtex and a titer lower than 0.320. Low PE
A cellulose acetate filament having a form factor and a KH form factor lower than 0.560, wherein these form factors are determined by the following ratio:
PE = 4πA / P 2 and KH = A / A k where A is the cross-sectional area of the filament, P is the perimeter of the filament cross-section, and Ak is the area of the convex hull of the filament cross-section.
２．５の置換度を有する請求項１記載のセルロースアセテートフィラメント。2. A cellulose acetate filament according to claim 1, wherein said filament has a degree of substitution of substantially 2.2 to 2.7, particularly substantially 2.5.
的に１．８から２．５dtexのフィラメントタイターを有する前記請求項の少なく
とも一つに記載のセルロースアセテートフィラメント。3. A cellulose acetate filament according to claim 1, wherein said filament has a filament titer of substantially 0.7 to 2.7 dtex, in particular substantially 1.8 to 2.5 dtex.
有する前記請求項の少なくとも一つに記載のセルロースアセテートフィラメント
。4. The cellulose acetate filament according to claim 1, wherein said filament has a PE form factor of substantially 0.2 to 0.3.
を有する前記請求項の少なくとも一つに記載のセルロースアセテートフィラメン
ト。5. The cellulose acetate filament according to claim 1, wherein said filament has a KH form factor of substantially 0.4 to 0.52.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19730485A DE19730485C2 (en) | 1997-07-16 | 1997-07-16 | Trilobal cross-section cellulose acetate filaments |
| DE19730485.0 | 1997-07-16 | ||
| PCT/EP1998/004409 WO1999004071A1 (en) | 1997-07-16 | 1998-07-15 | Cellulose acetate with trilobal cross section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001510245A true JP2001510245A (en) | 2001-07-31 |
| JP3299955B2 JP3299955B2 (en) | 2002-07-08 |
Family
ID=7835892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000503272A Expired - Fee Related JP3299955B2 (en) | 1997-07-16 | 1998-07-15 | Cellulose acetate filament with trilobal cross section |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6177194B1 (en) |
| EP (1) | EP0996778B1 (en) |
| JP (1) | JP3299955B2 (en) |
| AU (1) | AU9154098A (en) |
| CA (1) | CA2296690C (en) |
| DE (2) | DE19730485C2 (en) |
| WO (1) | WO1999004071A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017520689A (en) * | 2014-06-30 | 2017-07-27 | コーロン インダストリーズ インク | Modified cross-section lyocell material for tobacco filter and method for producing the same |
| US10517325B2 (en) | 2013-06-28 | 2019-12-31 | Kolon Industries, Inc. | Lyocell material for tobacco filter and method for preparing same |
| US10617146B2 (en) | 2014-12-31 | 2020-04-14 | Kolon Industries, Inc. | Method of manufacturing a lyocell material for a cigarette filter |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951062C2 (en) * | 1999-10-22 | 2002-04-04 | Rhodia Acetow Gmbh | A high performance cigarette filter |
| CA2874570A1 (en) * | 2012-07-25 | 2014-01-30 | Celanese Acetate Llc | Spinneret comprising tri-arc holes and tri-arc filaments produced therefrom |
| SG11201408143PA (en) * | 2012-07-25 | 2015-01-29 | Celanese Acetate Llc | Spinneret comprising tri-arc holes and tri-arc filaments produced therefrom |
| EP3526305A4 (en) | 2016-10-11 | 2020-05-27 | Eastman Chemical Company | Fiber configurations for wellbore treatment compositions |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE562946A (en) | 1953-12-28 | |||
| GB884203A (en) | 1958-01-02 | 1961-12-06 | Eastman Kodak Co | Improvements in and relating to tobacco smoke filter elements of cellulose organic ester filaments |
| FR1502860A (en) | 1966-09-29 | 1967-11-24 | Rhdiaceta Soc | New die and special yarns obtained by means of this die |
| US3543769A (en) | 1967-12-26 | 1970-12-01 | Celanese Corp | Cigarette filter plug |
| JPS60134012A (en) | 1983-12-21 | 1985-07-17 | Mitsubishi Rayon Co Ltd | Spinneret for spinning acetate fiber having y-shaped cross-section |
| JPS63270806A (en) | 1987-04-28 | 1988-11-08 | Mitsubishi Rayon Co Ltd | Spinning nozzle for acetate yarn |
| JP2928340B2 (en) | 1990-07-02 | 1999-08-03 | ダイセル化学工業株式会社 | Fiber bundle for tobacco filter and method for producing the same |
| US5269996A (en) * | 1992-09-14 | 1993-12-14 | Eastman Kodak Company | Process for the production of fine denier cellulose acetate fibers |
| DE4302055C1 (en) * | 1993-01-26 | 1994-03-24 | Rhodia Ag Rhone Poulenc | Cellulose acetate filaments prepd. by spinning from an acetone soln. - are useful for the prodn. of cigarette filter tow |
| JP3420359B2 (en) * | 1994-10-21 | 2003-06-23 | ダイセル化学工業株式会社 | Filter material for tobacco smoke, fibrous cellulose ester and method for producing the same |
| US5512230A (en) * | 1994-12-08 | 1996-04-30 | Eastman Chemical Company | Process for making cellulose acetate fibers |
| JPH10168650A (en) | 1996-12-06 | 1998-06-23 | Mitsubishi Rayon Co Ltd | Production of fine-size y-shaped cross-section cellulose acetate tow |
-
1997
- 1997-07-16 DE DE19730485A patent/DE19730485C2/en not_active Expired - Fee Related
-
1998
- 1998-07-15 AU AU91540/98A patent/AU9154098A/en not_active Abandoned
- 1998-07-15 WO PCT/EP1998/004409 patent/WO1999004071A1/en active IP Right Grant
- 1998-07-15 DE DE59809658T patent/DE59809658D1/en not_active Expired - Lifetime
- 1998-07-15 EP EP98943731A patent/EP0996778B1/en not_active Expired - Lifetime
- 1998-07-15 JP JP2000503272A patent/JP3299955B2/en not_active Expired - Fee Related
- 1998-07-15 CA CA002296690A patent/CA2296690C/en not_active Expired - Fee Related
- 1998-07-15 US US09/446,465 patent/US6177194B1/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10517325B2 (en) | 2013-06-28 | 2019-12-31 | Kolon Industries, Inc. | Lyocell material for tobacco filter and method for preparing same |
| US11330836B2 (en) | 2013-06-28 | 2022-05-17 | Kolon Industries, Inc. | Lyocell material for tobacco filter |
| JP2017520689A (en) * | 2014-06-30 | 2017-07-27 | コーロン インダストリーズ インク | Modified cross-section lyocell material for tobacco filter and method for producing the same |
| US11103003B2 (en) | 2014-06-30 | 2021-08-31 | Kolon Industries, Inc. | Modified cross-section lyocell material for tobacco filter, and preparation method therefor |
| US10617146B2 (en) | 2014-12-31 | 2020-04-14 | Kolon Industries, Inc. | Method of manufacturing a lyocell material for a cigarette filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2296690A1 (en) | 1999-01-28 |
| US6177194B1 (en) | 2001-01-23 |
| EP0996778A1 (en) | 2000-05-03 |
| CA2296690C (en) | 2003-02-04 |
| DE19730485A1 (en) | 1999-01-21 |
| DE59809658D1 (en) | 2003-10-23 |
| JP3299955B2 (en) | 2002-07-08 |
| WO1999004071A1 (en) | 1999-01-28 |
| AU9154098A (en) | 1999-02-10 |
| DE19730485C2 (en) | 2003-07-03 |
| EP0996778B1 (en) | 2003-09-17 |
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